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yaml --- r: 335970 b: refs/heads/master c: 4ac6875 h: refs/heads/master v: v3
git-mirror · Nov 20, 2012 · 3e7782f · 3e7782f
1 parent 6a8e540
commit 3e7782f
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5eff3c439d3478ba9e8ba5f8c0aaf6e6fadb6e58
+refs/heads/master: 4ac6875eeb97a49bad7bc8d56b5ec935904fc6e7
diff --git a/trunk/drivers/md/raid5.c b/trunk/drivers/md/raid5.c
@@ -5529,6 +5529,10 @@ static int run(struct mddev *mddev)
 		 * discard data disk but write parity disk
 		 */
 		stripe = stripe * PAGE_SIZE;
+		/* Round up to power of 2, as discard handling
+		 * currently assumes that */
+		while ((stripe-1) & stripe)
+			stripe = (stripe | (stripe-1)) + 1;
 		mddev->queue->limits.discard_alignment = stripe;
 		mddev->queue->limits.discard_granularity = stripe;
 		/*